CN105486593B - Accelerate the system and method for water-treeing for 10kV twisted polyethylene cables - Google Patents
Accelerate the system and method for water-treeing for 10kV twisted polyethylene cables Download PDFInfo
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- CN105486593B CN105486593B CN201610025068.4A CN201610025068A CN105486593B CN 105486593 B CN105486593 B CN 105486593B CN 201610025068 A CN201610025068 A CN 201610025068A CN 105486593 B CN105486593 B CN 105486593B
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- 239000004698 Polyethylene Substances 0.000 title claims abstract description 22
- -1 polyethylene Polymers 0.000 title claims abstract description 22
- 229920000573 polyethylene Polymers 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims description 35
- 238000007789 sealing Methods 0.000 claims abstract description 42
- 239000003822 epoxy resin Substances 0.000 claims abstract description 41
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 41
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 35
- 230000032683 aging Effects 0.000 claims abstract description 34
- 239000007788 liquid Substances 0.000 claims abstract description 23
- 238000009938 salting Methods 0.000 claims abstract description 21
- 238000001467 acupuncture Methods 0.000 claims abstract description 18
- 238000010438 heat treatment Methods 0.000 claims abstract description 18
- 240000005572 Syzygium cordatum Species 0.000 claims abstract description 17
- 235000006650 Syzygium cordatum Nutrition 0.000 claims abstract description 17
- 229910052802 copper Inorganic materials 0.000 claims abstract description 14
- 239000010949 copper Substances 0.000 claims abstract description 14
- 238000012545 processing Methods 0.000 claims abstract description 10
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 22
- 238000003483 aging Methods 0.000 claims description 20
- 239000011780 sodium chloride Substances 0.000 claims description 11
- 238000005452 bending Methods 0.000 claims description 8
- 238000002474 experimental method Methods 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 239000010426 asphalt Substances 0.000 claims description 2
- 239000000284 extract Substances 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 239000000243 solution Substances 0.000 description 7
- 229920003020 cross-linked polyethylene Polymers 0.000 description 4
- 239000004703 cross-linked polyethylene Substances 0.000 description 4
- 239000012267 brine Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000005684 electric field Effects 0.000 description 3
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 241000555268 Dendroides Species 0.000 description 1
- 241001124569 Lycaenidae Species 0.000 description 1
- 241000190070 Sarracenia purpurea Species 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000003679 aging effect Effects 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 235000014987 copper Nutrition 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 239000000412 dendrimer Substances 0.000 description 1
- 229920000736 dendritic polymer Polymers 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 230000005660 hydrophilic surface Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/20—Investigating strength properties of solid materials by application of mechanical stress by applying steady bending forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/003—Environmental or reliability tests
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- General Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Biochemistry (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Environmental & Geological Engineering (AREA)
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Abstract
The present invention provides a kind of system accelerating water-treeing for 10kV twisted polyethylene cable samples, including epoxy resin babinet, DC high-voltage source, mechanical arm, ground copper, heating plate.Babinet one pair of which is equipped with the sealing hole that current supply cable passes through to the two sides of setting, and the both ends of cable are exposed from sealing hole, and sealing hole uses two sealing rings to seal respectively.Peel insulating layer and semi-conductive layer off exposing copper core in one end that cable exposes sealing hole, DC high-voltage source with copper core for connecting, epoxy resin babinet is for pouring into salting liquid to submerge cable, ground copper one end is immersed in salting liquid, the other end is grounded, the part that cable immerses in salting liquid forms multiple apertures by acupuncture treatment processing, and heating plate is connect with epoxy resin babinet, and a mechanical arm is respectively equipped on the outside of two sealing holes.The present invention can simulate twisted polyethylene cable water tree, heat, mechanical aging caused by under humidity, excessively thermal environment, while retain the integrality of cable well.
Description
Technical field
It is specifically a kind of to accelerate for 10kV twisted polyethylene cables the present invention relates to high-voltage cable detection technique field
The system and method for water-treeing.
Background technology
Water tree is a kind of phenomenon that crosslinked polyethylene (XLPE) insulation is degraded, it is because moisture immerses XLPE insulating layers
In, the dendrimers that are formed with electric field collective effect.Water tree has hydrophilic characteristic, and water tree is some chains when beginning
Water-filling hole, gradually form the dendroid fine channel with hydrophilic surface later, under the action of moist and electric stress,
Water tree can rise to 1mm or so in several years.In the cable, the region that water tree occurs is mainly that semi-conductive layer is contacted with insulating layer
At the high spot and insulating layer internal flaw (stomata, impurity etc.) in face, the electric field strength in these places is higher, therefore easily becomes
The initiation point of water tree.
And in cable During Process of Long-term Operation, it is influenced by the size of current-carrying capacity, system of laying, environment temperature, can locally be gone out
The case where now overheating causes heat ageing degree to be aggravated.
Meanwhile the mechanical forces such as cable is drawn in installation, maintenance, operational process by improperly, bending, it can cause to answer
There is mechanical aging in cable under force effect.
This three classes aging is presently the most extensive aging type, has large effect for the safe handling of cable.
Still lack the equipment that experiment is carried out at the same time to three kinds of agings in existing experimental facilities, therefore the present invention is crosslinked poly- second for simulation
Alkene cable has very strong application value in water tree, heat, mechanical aging caused by operation moist, under mistake thermal environment, maintenance.
Invention content
The present invention provides a kind of system and method accelerating water-treeing for 10kV twisted polyethylene cables, structure letter
Single, digestion period is short, highly practical, can simulate twisted polyethylene cable it is moist, cross under thermal environment caused by water tree, heat,
Mechanical aging, while retaining the integrality of cable sample section well.
A kind of system accelerating water-treeing for 10kV twisted polyethylene cable samples, including it is epoxy resin babinet, straight
High-voltage power supply, mechanical arm, ground copper, heating plate are flowed, epoxy resin babinet one pair of which is equipped with current supply cable to the two sides of setting
The both ends of the sealing hole passed through, cable are exposed from sealing hole, and sealing hole is sealed using sealing ring, and cable exposes sealing hole
Off exposing copper core is peeled insulating layer and semi-conductive layer in the one end in hole, and DC high-voltage source with copper core for connecting, epoxy resin babinet
For pouring into salting liquid to submerge cable, ground copper one end is immersed in salting liquid, and the other end of ground copper is grounded, cable
The part immersed in salting liquid forms multiple apertures by acupuncture treatment processing, and heating plate is connect with epoxy resin babinet, for ring
Oxygen resin babinet is heated, and is respectively equipped with a mechanical arm on the outside of two sealing holes, two mechanical arms clamp electricity respectively
Cable exposes the both ends of sealing hole, and wherein one end is fixed, and the other end is moved by motor drive machinery arm, to bending cable mould
Quasi- mechanical aging process.
Further, water resistance is serially connected between DC high-voltage source and copper core.
Further, another two be arranged oppositely side of epoxy resin babinet is attached by gum cover.
Further, the salting liquid is the sodium chloride solution that mass percent concentration is 20%.
Further, the part that cable immerses in salting liquid penetrates semi-conductive layer using draw point, is inserted into insulating layer, later
Syringe needle is extracted, pricks out multiple apertures on cable at equal intervals.
A method of for 10kV twisted polyethylene cable samples accelerate water-treeing, using above-mentioned ageing system into
Row, described method includes following steps：
1) water-treeing progress before acupuncture treatment processing is carried out to the sample segments of cable, with draw point cable sample segment table
Multiple apertures are pricked out to accelerate the speed of growth of water tree in face, while semi-conductive layer and insulation are peelled off in one end of the sample segments of cable
Layer so that the copper core of cable is exposed；
2) sample segments of the cable by acupuncture treatment processing are passed through into the sealing hole reserved at left and right sides of epoxy resin babinet
Hole, it is ensured that the aperture left of having an acupuncture treatment is located at epoxy resin box house, is later sealed sealing hole using sealing ring；
3) salting liquid is poured into epoxy resin babinet, the sample segments of cable is submerged；
4) ground copper one end is immersed in sodium chloride solution, a termination earth lead, and is fixed on hanger bracket,
The high pressure of DC high-voltage source is applied in the copper core that cable exposure comes out later, starts to accelerate water-treeing process；
5) both ends that during the experiment, two mechanical arms clamp cable respectively move back and forth, and so that cable is carried out curved
Bent process simulates actual machine ageing process；
6) heating plate heats epoxy resin babinet, provides 100-110 DEG C of high temperature, is advised according to 6 DEG C of accelerated ageings
Then accelerated ageing.
Further, the salting liquid is the sodium chloride solution that mass percent concentration is 20%.
Further, the use of the tip radius of draw point it is 4 microns in step 1), angle is 30 degree, and profile diameter arrives for 0.7
1 millimeter.
Compared with the existing technology, remarkable result is the present invention：
The present invention ensure that by sealing ring in carrying out water tree ageing process to twisted polyethylene cable, designed
System has good sealing performance, will not cause the leakage of salting liquid.It avoids simultaneously to cable sample section integrality emphatically
Destruction；Secondly, it is added high pressure by cable copper core, the method for salting liquid ground connection can ensure to be formed in crosslinked polyetylene insulated layer
Very high electric field is conducive to growth of the water tree on cut cable acupuncture treatment position, meanwhile, cable bend work(may be implemented in mechanical arm
Can, carry out the mechanical aging experiment of cable；Finally, heating plate can be heated to whole, provide 110 DEG C of highest, generally not
High temperature more than 100 DEG C can effectively carry out the thermal ageing test of cable.
Description of the drawings
Fig. 1 is the structural schematic diagram for the system that the present invention accelerates water-treeing for 10kV twisted polyethylene cable samples.
In figure：1- DC high-voltage sources；2- water resistances；3- mechanical arms；4- ground coppers；5- heating plates；6- sodium chloride salts are molten
Liquid；7- sealing rings；8- epoxy resin babinets；9- cables；10- seals hole；11- gum covers.
Specific implementation mode
Below in conjunction with the attached drawing in the present invention, the technical solution in the present invention is clearly and completely described.
Fig. 1 show the structural representation that the present invention accelerates the system of water-treeing for 10kV twisted polyethylene cable samples
Figure, the system comprises epoxy resin babinet 8, ground copper 4, mechanical arm 3 and heating plates 5.8 one pair of which of epoxy resin babinet
It is equipped with sealing hole 10 to the two sides of setting, the size for sealing hole 10 is single according to XLPE cable (such as cable 9 shown in Fig. 1)
The size design of phase sample segments, while two sealing rings 7 are set at sealing hole 10, prevent epoxy resin babinet to play
The purpose of liquid leakage in 8.Epoxy resin babinet 8 is made using epoxy resin, have the characteristics that it is heat safe, if using ceramics
It is then more crisp, electric discharge problem is then susceptible to using metal.
Another two be arranged oppositely side of epoxy resin babinet 8 is attached by gum cover 11, to prevent 9 curvature of cable
Excessive the case where leading to not also cross two sealing hole 10, by the setting of gum cover, there is the cable of certain curvature still
It can pass freely through, increase workable number of cables.The outside of two sealing holes 10 is respectively equipped with a mechanical arm 3,
Mechanical arm 3 is used to that the cable 9 of two sealing holes 10 will to be passed through to be bent.Two mechanical arms 3 clamp cable ends respectively,
Middle one end is fixed, and the other end is moved by motor drive machinery arm 3, to bending cable, analog mechanical ageing process.Use machine
Mechanical stress caused by the mode of 3 bending cable of tool arm can break straight cable to avoid routine with machining mode prevents mechanical old
Change the influence generated.
In use, the cable 9 having had an acupuncture treatment to be passed through to two sealing holes 10 as shown in Figure 1, the region for pricking needle is stayed
Inside epoxy resin babinet 8.The sodium chloride brine 6 that mass percent concentration is 20% is poured into epoxy resin babinet 8,
For the purpose of being completely soaked cut cable.4 one end of ground copper is immersed in sodium chloride solution 6, another termination of ground copper 4
Ground, to achieve the purpose that be grounded sodium chloride brine 6.Cut cable in epoxy resin babinet 8 is put by both ends from sealing
Hole 10 exposes, and the insulating layer of one end and semi-conductive layer is peeled off, the copper core of cable is exposed, and as far as possible will
This end exposed portion is longer, prevents edge flashing, and the 25kV voltages of DC high-voltage source 1 are added in copper core 9 and are promoted
Make acceleration water-treeing, water resistance 2 is serially connected between DC high-voltage source 1 and copper core, water resistance 2 plays protection to entire circuit and makees
With.Meanwhile during the experiment, the mechanical arm 3 of both sides clamps the both ends of cable 9 and moves back and forth respectively, and cable 9 is made to carry out
Bending process simulates actual machine ageing process；Heating plate 5 is for heating epoxy resin babinet 8, to asphalt mixtures modified by epoxy resin
Sodium chloride brine 6 in fat babinet 8 is heated.Heating plate 5 shown in Fig. 1 is located at 8 bottom of epoxy resin babinet, heating plate 5
100 DEG C or so high temperature can be provided, according to 6 DEG C of accelerated ageing rules, whole aging speed can reach 3.2 times of traditional scheme.
Using heating plate 5 can count simultaneously and water-treeing during electricity, heat ageing effect, can more simulate compared with prior art water tree life
Actual condition in growth process.
Cable accelerates the sample segments (being located at the cut cable in epoxy resin babinet 8) of cable 9 used in water-treeing
Acupuncture treatment processing is had to pass through before being put into epoxy resin babinet 8, is 4 microns by tip radius, angle is 30 degree, and profile diameter is
0.7 to 1 millimeter of draw point (size is not strictly required) penetrates semi-conductive layer, is inserted into insulating layer, later extracts syringe needle, etc.
The sample segments in cable 9 of spacing prick out multiple holes.
According to experiment needs, the voltage applied while it can be adjusted and change according to the depth and quantity of acupuncture treatment,
It can also be adjusted according to the required water tree speed of growth.
The present invention also provides a kind of methods accelerating water-treeing for 10kV twisted polyethylene cable samples, using upper
The progress of aging system is stated, the aging method includes the following steps：
1) water-treeing progress before acupuncture treatment processing is carried out to the sample segments of cable 9, with draw point cable 9 sample segments
Multiple apertures are pricked out to accelerate the speed of growth of water tree in surface at equal intervals, while one end of the sample segments of cable 9 peels off half
Conductive layer and insulating layer so that the copper core of cable 9 is exposed；
2) sample segments of the cable 9 by acupuncture treatment processing are passed through into the sealing that 8 left and right sides of epoxy resin babinet reserves
Hole 10, it is ensured that the aperture left of having an acupuncture treatment is located inside epoxy resin babinet 8, later will sealing hole 10 using sealing ring 7 into
Row sealing；
3) sodium chloride solution that mass percent concentration is 20% is poured into epoxy resin babinet 8, by the sample of cable 9
Section submergence；
4) 4 one end of ground copper is immersed in sodium chloride solution, a termination earth lead, and is fixed in hanger bracket
On, the high pressure of DC high-voltage source 1 is applied in the copper core that cable exposure comes out later, starts to accelerate water-treeing process；
5) both ends that during the experiment, two mechanical arms 3 clamp cable 9 respectively move back and forth, and cable 9 is made to carry out
Bending process simulates actual machine ageing process；
6) heating plate 5 heats epoxy resin babinet 8, provides 100 DEG C or so high temperature, is advised according to 6 DEG C of accelerated ageings
Then, whole aging speed can reach 3.2 times of traditional scheme.
The present invention applies voltage by cable after giving acupuncture treatment in salting liquid, ensure that 10kV twisted polyethylene cable samples
" pearl string " water tree is smoothly formed at acupuncture treatment, while utilizing mechanical arm analog mechanical ageing process, is accelerated with heating plate old
Change process.Compared to traditional water cup electrode method, this invention ensures that in ageing process cable sample section integrality, while it is also right
Experimental provision is simplified and has been innovated, and multiple types aging can be carried out at the same time, compared to aging single in conventional method
Mode can have better equivalence in more preferable ageing process of the simulation in mud under cable actual operating state.
The above, the specific implementation mode only invented, but the protection domain invented is not limited thereto, and it is any to belong to
In the technical scope that invention discloses, the change or replacement that can be readily occurred in should all be covered those skilled in the art
Within the protection domain of invention.Therefore, the protection domain of invention should be subject to the protection scope in claims.
Claims (8)
1. a kind of system accelerating water-treeing for 10kV twisted polyethylene cable samples, it is characterised in that：Including asphalt mixtures modified by epoxy resin
Fat babinet (8), DC high-voltage source (1), mechanical arm (3), ground copper (4), heating plate (5), epoxy resin babinet (8) wherein one
The two sides being arranged oppositely are equipped with the sealing hole (10) that current supply cable (9) passes through, and the both ends of cable (9) are revealed from sealing hole (10)
Go out, sealing hole (10) is sealed using sealing ring (7), and one end that cable (9) exposes sealing hole (10) is led by insulating layer and partly
Electric layer peels exposing copper core off, DC high-voltage source (1) for connect with copper core, epoxy resin babinet (8) be used to pour into salting liquid with
Cable (9) are submerged, ground copper (4) one end is immersed in salting liquid, and the other end of ground copper (4) is grounded, and cable (9) immerses
Part in salting liquid forms multiple apertures by acupuncture treatment processing, and heating plate (5) is connect with epoxy resin babinet (8), for pair
Epoxy resin babinet (8) is heated, and a mechanical arm (3), two machineries are respectively equipped on the outside of two sealing holes (10)
Arm (3) clamps the both ends that cable (9) exposes sealing hole (10) respectively, and wherein one end is fixed, and the other end relies on motor driving machine
Tool arm (3) is mobile, to bending cable (9) analog mechanical ageing process.
2. accelerating the system of water-treeing for 10kV twisted polyethylene cable samples as described in claim 1, feature exists
In：DC high-voltage source (1) is serially connected with water resistance (2) between copper core.
3. accelerating the system of water-treeing for 10kV twisted polyethylene cable samples as described in claim 1, feature exists
In：Another two be arranged oppositely side of epoxy resin babinet (8) is attached by gum cover (11).
4. accelerating the system of water-treeing for 10kV twisted polyethylene cable samples as described in claim 1, feature exists
In：The salting liquid is the sodium chloride solution that mass percent concentration is 20%.
5. accelerating the system of water-treeing for 10kV twisted polyethylene cable samples as described in claim 1, feature exists
In：The part that cable (9) immerses in salting liquid penetrates semi-conductive layer using draw point, is inserted into insulating layer, later extracts syringe needle,
At equal intervals multiple apertures are pricked out on cable (9).
6. a kind of method accelerating water-treeing for 10kV twisted polyethylene cable samples, it is characterised in that use claim
Any system carries out in 1-5, and described method includes following steps：
1) acupuncture treatment processing is carried out to the sample segments of cable (9) before water-treeing progress, the sample segments with draw point in cable (9)
Multiple apertures are pricked out to accelerate the speed of growth of water tree in surface, while semi-conductive layer is peelled off in one end of the sample segments of cable (9)
And insulating layer so that the copper core of cable (9) is exposed；
2) sample segments of the cable (9) by acupuncture treatment processing are passed through into the sealing reserved at left and right sides of epoxy resin babinet (8)
Hole (10), it is ensured that the aperture left of having an acupuncture treatment is located at epoxy resin babinet (8) inside, and sealing hole (10) is used sealing later
Circle (7) is sealed；
3) salting liquid is poured into epoxy resin babinet (8), the sample segments of cable (9) is submerged；
4) ground copper (4) one end is immersed in salting liquid, a termination earth lead, and be fixed on hanger bracket, later
The high pressure of DC high-voltage source (1) is applied in the copper core that cable exposure comes out, starts to accelerate water-treeing process；
5) both ends that during the experiment, two mechanical arms (3) clamp cable (9) respectively move back and forth, make cable (9) into
Row bending process simulates actual machine ageing process；
6) heating plate (5) heats epoxy resin babinet (8), provides 100-110 DEG C of high temperature, according to 6 DEG C of accelerated ageings
Regular accelerated ageing.
7. accelerating the method for water-treeing for 10kV twisted polyethylene cable samples as claimed in claim 6, feature exists
In：The salting liquid is the sodium chloride solution that mass percent concentration is 20%.
8. accelerating the method for water-treeing for 10kV twisted polyethylene cable samples as claimed in claim 6, feature exists
In：It is 4 microns that the tip radius of draw point is used in step 1), and angle is 30 degree, and profile diameter is 0.7 to 1 millimeter.
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| CN201610025068.4A CN105486593B (en) | 2016-01-15 | 2016-01-15 | Accelerate the system and method for water-treeing for 10kV twisted polyethylene cables |
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| CN201610025068.4A CN105486593B (en) | 2016-01-15 | 2016-01-15 | Accelerate the system and method for water-treeing for 10kV twisted polyethylene cables |
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| CN105486593B true CN105486593B (en) | 2018-08-14 |
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| CN109444032B (en) * | 2018-11-08 | 2023-12-26 | 国网浙江象山县供电有限公司 | Intelligent monitoring device for power cable corrosion monitoring |
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| CN109444612A (en) * | 2018-12-21 | 2019-03-08 | 核动力运行研究所 | A kind of crosslinked polyethylene block sample acceleration water-treeing device |
| CN109781556A (en) * | 2018-12-29 | 2019-05-21 | 广州市白云化工实业有限公司 | Sealant aging shear |
| CN109556950B (en) * | 2018-12-29 | 2022-02-15 | 广州市白云化工实业有限公司 | Sealant aging and stretching device |
| CN110907345A (en) * | 2019-11-19 | 2020-03-24 | 浙江万马高分子材料集团有限公司 | Aging performance testing method of silane crosslinked polyethylene cable material |
| CN112666223B (en) * | 2019-12-19 | 2023-04-25 | 深圳硅基仿生科技股份有限公司 | Electrode aging test device |
| CN111638417B (en) * | 2020-06-10 | 2021-03-09 | 南方电网科学研究院有限责任公司 | Be used for 10kV crosslinked polyethylene cable section sample water tree culture apparatus |
| CN112649710A (en) * | 2020-12-17 | 2021-04-13 | 国网河北省电力有限公司电力科学研究院 | Cable water branch cultivation method and device |
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| CN205333427U (en) * | 2016-01-15 | 2016-06-22 | 国家电网公司 | System for water tree is ageing with higher speed to be used for 10kV crosslinked polyethylene cable sample |
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| CN101464235B (en) * | 2009-01-12 | 2011-06-08 | 重庆大学 | Test method and apparatus for polymer power cable insulation accelerated electric tree aging |
| JP5528306B2 (en) * | 2010-11-11 | 2014-06-25 | 東芝三菱電機産業システム株式会社 | Water tree generation test method and water tree generation test specimen manufacturing method |
| CN103278754B (en) * | 2013-05-15 | 2015-05-20 | 广州供电局有限公司 | Equipment and method for culturing cable water tree |
| CN103472371B (en) * | 2013-08-20 | 2016-04-13 | 华中科技大学 | A kind of crosslinked polyethylene midium voltage cable water tree quick aging method |
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| CN205333427U (en) * | 2016-01-15 | 2016-06-22 | 国家电网公司 | System for water tree is ageing with higher speed to be used for 10kV crosslinked polyethylene cable sample |
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